EP0512752A1 - Ummantelung mit mehrschichtigem Verkleidungsystem - Google Patents
Ummantelung mit mehrschichtigem Verkleidungsystem Download PDFInfo
- Publication number
- EP0512752A1 EP0512752A1 EP19920303911 EP92303911A EP0512752A1 EP 0512752 A1 EP0512752 A1 EP 0512752A1 EP 19920303911 EP19920303911 EP 19920303911 EP 92303911 A EP92303911 A EP 92303911A EP 0512752 A1 EP0512752 A1 EP 0512752A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- geonet
- geomembrane
- grit
- lining system
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002245 particle Substances 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000004746 geotextile Substances 0.000 claims abstract description 17
- 229920003023 plastic Polymers 0.000 claims abstract description 17
- 239000004033 plastic Substances 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 12
- 239000010410 layer Substances 0.000 description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 229920001179 medium density polyethylene Polymers 0.000 description 6
- 239000004701 medium-density polyethylene Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- -1 polyethylenes Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 230000009105 vegetative growth Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
Definitions
- This invention relates to multi-layer lining systems for pits or enclosures formed in or above the ground and for cover systems primarily for such enclosures or other geoengineering structures.
- the enclosure may be a waste containment landfill enclosure, an alternative term for which is waste management pit.
- a multi-layer lining system (sometimes called a veneer) comprising for example a flexible, impermeable membrane (geomembrane) to act as a base liner, a drainage net (geonet) which functions as a drainage core to provide a leak detection layer, an inner geomembrane or main liner, a geonet which functions as a drainage core to provide a leachate collection layer, and a fabric (geotextile) which functions as a filter layer.
- a cover layer of suitable soil typically about 300mm thick, is provided to prevent puncture of the underlying geotextile etc. Soil cover layers may be reinforced by the inclusion of geogrids.
- the leachate is the contaminated liquid from the landfill plus ambient moisture, and drains into at least one sump at the bottom of the enclosure.
- the liquid in the leak detection layer drains into at least one separate sump.
- the lining system prevents contamination of ground water.
- a cover system or cap having a multi-layer lining system comprising for example a geotextile filter layer, a geonet for gas collection, a geomembrane, a geonet which functions as a drainage core for rain or melted snow, and a geotextile.
- a cover layer of soil typically about 600 to 750 mm thick, is provided to promote surface water run off and vegetative growth which serves as erosion control. The cover system prevents rain or melted snow running into the waste, can act as a gas collection system, and landscapes the completed enclosure.
- the cover system is not placed until the enclosure is full, and it is possible that the cover system be omitted or that such a cover system be used to cover something other than a properly formed enclosure.
- the enclosure can be used for different purposes, such as containment of petroleum products, for instance as a spillage containment bund around an oil storage tank.
- containment of petroleum products for instance as a spillage containment bund around an oil storage tank.
- the invention is primarily for massive constructions such as landfill enclosures, it could find use for smaller constructions, eg a containment bund of a base size 3m x 3m and depth 3m.
- the present invention provides lining systems, geocomponents, an enclosure and a cover system.
- the appropriate contacting surface or surfaces or parts thereof will be gritted and firmly retaining particles of grit.
- the coefficient of friction between the layers of the lining system can be greatly increased, enabling the slopes at which the lining system lies to be increased above about 1 in 5 (20%) or 1 in 4 to about 1 in 3 or 1 in 2.5 or greater, thereby greatly increasing the capacity of say a waste containment landfill enclosure.
- Existing cover systems can be modified, removed or replaced, if needed more waste can be dumped, and new, steeper-sided cover systems can be constructed.
- the invention is also useful in horizontal parts of the lining systems and at any angle of inclination; it provides resistance to any significant shear forces acting in the plane of the lining system.
- the invention can be used on the sides and/or base of a said enclosure or on the sides and/or top of a cover system.
- At least one face of a geonet will normally be in contact with a geotextile. It is posible to insert a geotextile between a geomembrane and a geonet, for instance with a gritted surface of the geomembrane in contact with the geotextile, but a geomembrane is preferably in contact with a geonet. Pressure, eg of the fill, will cause the grit retained in the surface of one lining component to penetrate into or indent the surface of the contacting lining component, or interlock with grit on the surface of the contacting lining component.
- the peak coefficient of friction is only slightly smaller if just one contacting surface is gritted though the residual coefficient of friction is higher if both contacting surfaces are gritted.
- the peak coefficient of friction is that measured before slippage whilst the residual coefficient of friction is that measured during slippage.
- the user can choose according to economic criteria whether both contacting lining components are gritted or not.
- grit can be applied to the upper face of the base liner, to both faces of each drainage core and to both faces of the main liner, or only to the drainage cores or only to the liners.
- the geogrids By gritting the geogrids, they can be usefully laid against or laid within the lining system and enable the inclination of the slope to be further increased by conferring increased tensile strength to the lining system - thus, for the side walls of the enclosure, the geogrids can be secured to the top margins of the enclosure. In addition, the gritting reduces slippage during construction on steep slopes.
- the geogrids can be used in one or more layers, in the latter case either spaced apart or in contact with each other.
- the grit particles are retained by mechanical keying or anchoring, ie the plastics material engages "undercut" surfaces of the grit. In this way, the friction-increasing characteristics are stable and permanent, and are not affected by normal chemicals present eg in a waste containment landfill enclosure.
- the grit particles are incorporated in the plastics material as part of a manufacturing process and not because of the random contamination with say sand that may occur on a construction site; the latter would not lead to firm retention of the grit particles or of sufficiently even distribution of particles.
- any suitable grit can be used, provided it is hard and angular and will penetrate into or indent the face of the layer in contact or will interlock with grit on the layer in contact; for instance the grit can be powdered or fractured glass as used in glass-paper, very sharp angular sand as used in sandpaper, or aluminium oxide as used in emery paper. It is preferred that the grit particles should be in a single layer, not as in DE-A-3 921 397 for instance. Any suitable range of sizes can be used, but the preferred maximum particle size is about 1 mm or 0.6 mm though larger particles can be used; it is preferred that the largest particles have a particle size of at least about 0.4 mm.
- the surface of the lining component is heated for incorporation of the grit particles, it can be heated by any suitable non-contact heating such as flame or hot air heating. It is desirable that the :eating should be rapid so that only the surface layer, say not greater than about 0.5 mm, melts or softens.
- the surface may be heated for instance to a temperature of up to about 250°C in the case of medium or high density polyethylene.
- the grit may be heated or warmed, for instance to a temperature of about 360°C.
- the grit can be pressed into the surface using a pressing member arranged such that a gap is left between the pressing member and the surface of the geocomponent and the grit particles remain proud of, i.e. project from, the surface.
- the pressing member can for instance be a roller which coacts for instance with a larger diameter roll around which or to which the geocomponent is fed.
- a retaining coating say having a thickness not greater than 0.1 mm, can be applied, e.g. sprayed on or roller applied, in order to hold the grit in place.
- the coating can be a very thin flexible varnish or latex; the coating need not impair the frictional properties of the grit, particularly if the grit is under relatively high pressure in use, such as the pressure between the geonet and the geomembrane in a waste containment landfill enclosure.
- the grit can be deposited on a surface and the substrate brought down onto the grit, or the grit can be deposited on the substrate. Where a mesh structure is being coated, it is preferable to bring the mesh structure down onto the grit to avoid having to recycle too much grit. It is desirable to have a fixed grit deposit position and a moving lining component.
- the lining component can be fed to or passed around a large diameter roll, say having a diameter of at least about 500 mm, the grit particles being fed to the surface of the roll.
- the geomembranes will generally be wide, say over about three or five metres wide, standard widths being about 5 metres, about 6.86 metres and about 10 metres, and will normally be relatively strong, say over 20 or 40 kN/m width.
- the geomembranes can be gritted on one or both faces - thus the gritted surface can be in contact with soil (which term includes earth, sand and clay).
- the geomembranes may be formed for example of medium or high density polyethylene or of coextrusions of low density and medium density or high density polyethylene or of elastomeric materials (which are plastics materials in the context of the present specification).
- the grit particles may be applied to the surface of a geomembrane or geonet in zones, leaving an area or areas to which the grit particles have not been applied.
- the gritted zones may be longitudinal stripes, for instance about 40 mm or 200 mm wide with uncoated areas of about 40 mm up to about 250 mm wide, but any suitable pattern, for example herringbone, can be used.
- At least the thicker portions of the geogrids are coated as it is these portions which will be pressed most strongly into contact with the contacting surfaces.
- the thicker portions may be bars extending transversely to oriented strands.
- the lining components may be coated on one or both faces, and any lining component can be coated in zones, for instance stripes.
- the waste containment landfill enclosure 1 shown in Figure 1 has a side wall and base lining system 2 forming a massive cell, and a massive closure system with a closure lining system 3.
- the lining system 2 has a geomembrane base liner 4, a leak detection geonet drainage core 5, a geomembrane main liner 6, a geonet leachate drainage core 7, a geotextile filter 8, a uniaxial geogrid 9 and a layer of soil such as clay 10.
- a further layer of soil 11 is placed beneath the main liner 6 with an extra geotextile filter 12 inserted above the leak detection drainage core 5.
- the leak detection drainage core 5 is shown as being connected to a leak detector sump 13 and the leachate drainage core 7 is shown as being connected to a leachate sump 14.
- the plastics material components of the lining system are securely fixed to the ground, for instance by means of stakes 15.
- the right-hand side of Figure 1 shows that with use of the lining system 2, the side wall slope can be considerably increased.
- the dashed line on the left-hand side of Figure 1 shows the increased capacity that can be made available by using the invention.
- the closure lining system 3 there is a geomembrane containment liner 16, a geonet drainage core 17, a geotextile filter 18, a uniaxial geogrid 19 and a soil layer 20.
- the geogrid 19 can be taken right over the top of the closure system 3 in a continuous manner (whether as a single length or multiple lengths joined together), to secure the whole lining system 3.
- Figure 2 shows a polythylene geomembrane liner 4, 6 or 16. There are stripes 21 which are gritted, leaving an ungritted strip 22 and ungritted edge portions 23.
- the liner 4, 6 or 16 can be gritted on one or both faces.
- the liner 4, 6, 16 was formed by extrusion and was gritted for instance as explained below.
- the width was about 5 metres, the thickness about 2 mm (an alternative thickness is about 3 mm), and the liner 4, 6 or 16 can be provided in large rolls; its strength is about 48 kN/m width for a 2 mm thickness.
- FIGs 3 and 4 show a polythylene geonet drainage core 5, 7 or 17.
- the drainage core is bi-planar, comprising two sets of strands 24, 25 whose axes are in different planes. As shown more clearly in Figure 4, at the respective faces only the external portions of the set of strands 24, 25 are coated with grit, though in other procedures the whole of the surface area of geonet or core is gritted.
- the drainage core of Figure 3 is formed by integral extrusion in accordance with US 2 919 467 and is gritted for instance as explained below.
- the width is about 5 metres, the overall thickness about 5 mm, and the drainage core 5, 7 or 17 can be provided in large rolls.
- Figure 5 illustrates an integrally-extruded polythylene drainage core 5, 7 or 17, but in which on one face the external portions of both sets of strands 24, 25 are coplanar. At the respective faces, only the external portions of the strands 24, 25 are coated with grit.
- Figure 6 illustrates a tri-planar integrally-extruded polyethylene drainage core 5, 7 or 17, having an intermediate set of strands 26. At the respective faces, only the external portion of the strands 24, 25 are coated with grit.
- FIG. 7 shows a polythylene geogrid 9 or 19.
- the geogrid 9 or 19 is shown as having oriented strands 27 and thicker transverse bars 28.
- the geogrid 9 or 19 will have strong uniaxial strength characteristics, though it may include some biaxial orientation. Normally, geogrids are substantially uniplanar, and are preferably so; however, for purposes of the present invention, the geogrids need not be substantially uniplanar.
- the bars 28 are shown as gritted whilst the strands 27 are not gritted.
- the geogrid 9 or 19 can be made as disclosed in US 4 374 798 or EP-A-0 374 365 or EP-A-0 418 104 and is gritted for instance as explained below.
- the width is about 1 metre, the overall thickness about 4.5 mm, and the geogrid 9 or 19 can be provided in large rolls.
- the geotextile is not specifically illustrated, and can be a standard geotextile for instance as supplied by E I Dupont de Nemours.
- Figure 8 shows a geonet or drainage core 5 (or 7 or 17) being gritted, but the lining component could be a geomembrane or liner 6 (or 4 or 16) or a geogrid 9 (or 19).
- the geonet 5 passes from a let-off roll 31 to a take-up roll 32, passing around various guide rollers which are not described in detail. Normally, the take-up roll 32 will be driven, and the rolls 33, 34 are also driven. The geonet 5 is just brought up to the roll 34 but passes around a significant arc of the roll 33 to allow the plant to occupy less space.
- the geonet 5 is held close to, but slightly spaced apart from, the roll 33, 34 by a nip roller 35 so that grit particles 36 are pressed into the surface of the geonet 5, but remain projecting from the surface.
- the grit particles 36 may be commercial aluminium oxide grit with a particle size ranging from 0.6 mm to dust.
- the grit particles 36 fall onto the surface of the roll 33, 34 and pass under a doctor blade 40 so that they are distributed fairly evenly over the surface of the roll 33, 34.
- the roll 33, 34 is water cooled, but the grit particles 36 are still at a suitable temperature of about 360°C when they come into contact with the net 5.
- the grit particles cause local melting of the contacting face of the net 35, and become embedded in the face and securely held in the face by mechanical keying or anchoring, the plastics material of the net 5 closing around "undercut" surfaces of the grit particles 36.
- the cold roll 33, 34 ensures that the body of the net 5 is not melted.
- a rotary brush 41 brushes off any loose grit particles 36, for return to the hoppers 37.
- Two sprayers 42 can be included for spraying on a thin coating to hold any grit particles which are not properly keyed into position.
- the sprayers 42 may be followed by suitable dryers (not shown).
- the arrangement of Figure 8 is suitable for gritting a geonet 5 as the geonet 5 is brought down onto the gritted moving surface of the roll 33, 34 and the amount of recycled grit particles 36 is kept to a minimum.
- the lining component is gritted on each face.
- outlets 39 can cover only part of the width of the rolls 33, 34, for applying stripes of grit or leaving marginal portions ungritted.
- Figure 9 corresponds to the right-hand side of Figure 8, and shows an arrangement for gritting a geonet 5 (or other lining component or geogrid 9 or 19) on one face only.
- Figure 10 corresponds generally to Figure 9, and the same reference numerals are used for items having a similar function.
- the arrangement is more suitable for gritting a geomembrane 4 (or 6 or 16), the gritting being on one face only.
- the geomembrane 4 is passed around about 180° of the roll 33 and the grit particles 36 are spread on the upper surface of the geomembrane 4 rather than on the roll 33.
- Interface shear testing was carried out on a medium density polyethylene geonet laid against a medium density polyethylene geomembrane, the geonet and the geomembrane being as described above.
- the peak and residual shear stresses were measured at three different normal stresses at about 22, 37 and 52 kN/m2, the angle of friction ⁇ being calculated (the coefficient of friction is tan ⁇ ).
- the results were as follows:
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Revetment (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9109493 | 1991-05-02 | ||
GB919109493A GB9109493D0 (en) | 1991-05-02 | 1991-05-02 | Applying grit to a substrate |
GB9204235 | 1992-02-27 | ||
GB9204235A GB2255292B (en) | 1991-05-02 | 1992-02-27 | A geoengineering structure having a multi-layer lining or cover system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0512752A1 true EP0512752A1 (de) | 1992-11-11 |
Family
ID=26298821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920303911 Withdrawn EP0512752A1 (de) | 1991-05-02 | 1992-04-30 | Ummantelung mit mehrschichtigem Verkleidungsystem |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0512752A1 (de) |
JP (1) | JPH0671244A (de) |
CA (1) | CA2067835A1 (de) |
GB (1) | GB2255292B (de) |
HU (1) | HUT64121A (de) |
MY (1) | MY108705A (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995011350A1 (en) * | 1993-10-19 | 1995-04-27 | Saiform S.P.A. | Geocomposite for reinforcement and containment works having high-elastic modulus and a locally differentiated deformability |
AT401784B (de) * | 1994-06-17 | 1996-11-25 | Differenz Friedrich Dipl Ing D | Dichtungssystem |
EP0778799A1 (de) * | 1994-09-01 | 1997-06-18 | Geosynthetics, Inc. | Stabilisierte flüssigkeitssperrschicht und verfahren zur herstellung |
EP0901408A1 (de) * | 1996-04-10 | 1999-03-17 | Gse Lining Technology Inc. | System und verfahren zur bildung einer strukturierten oberfläche auf eine geomembran |
EP0999037A2 (de) * | 1998-11-06 | 2000-05-10 | Bridgestone Corporation | Harznetz und dessen Herstellungsverfahren, sowie gezogenes Produkt aus einem Polyethylen enthaltenden Harz |
EP1033228A2 (de) * | 1999-02-26 | 2000-09-06 | A.+E. Ungricht GmbH & Co. KG | Kunststoffbahn zur Verwendung im Tiefbau |
KR100341505B1 (ko) * | 2000-06-27 | 2002-06-21 | 심진섭 | 마찰성 지오멤브레인 시이트, 그 제조방법 및 장치 |
WO2008146987A1 (en) * | 2007-05-31 | 2008-12-04 | Samyang Corporation | Geonet of multiple layer structure used in engineering works, apparatus for manufacturing the same, and method for manufacturing the same |
EP2576394A4 (de) * | 2009-11-20 | 2018-01-03 | Red Leaf Resources, Inc. | Absenkungskontrollsystem |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4317537A1 (de) * | 1993-05-26 | 1994-12-01 | Siemens Ag | Einrichtung zum Abdichten und Überwachen eines Körpers, insbesondere einer Abfalldeponie |
DE4410648C2 (de) * | 1994-03-26 | 2001-03-01 | Naue Fasertechnik | Kunststoffdichtungsbahn mit Oberflächenprofilierung |
DE4421401C2 (de) * | 1994-06-18 | 2000-05-25 | Thanex Polyurethan Chemie Gmbh | Bodenabdichtung für Mülldeponien |
GB9423853D0 (en) | 1994-11-25 | 1995-01-11 | Netlon Ltd | Applying grit particles to a continuous web |
US5612081A (en) * | 1994-11-25 | 1997-03-18 | Netlon Limited | Applying grit particles to a continuous web |
GB2295842B (en) * | 1994-12-08 | 1998-03-25 | Netlon Ltd | Temporary vehicle-bearing surface |
US5597194A (en) * | 1995-04-10 | 1997-01-28 | The Tensar Corporation | High friction, non-slip, flexible and heat resistant plastic net |
GB2322098B (en) * | 1997-01-07 | 2000-04-12 | David James Townsend | Apparatus for gas and water drainage |
DE20203130U1 (de) | 2002-02-27 | 2002-05-08 | SRS Deponiebau GmbH, 76229 Karlsruhe | Dichtungsaufbau für eine Deponie von Abfällen |
KR100492863B1 (ko) * | 2002-09-13 | 2005-05-31 | 피티엘산업(주) | 바이오세라믹 고화제를 이용한 섬유 고화판의 제조방법 |
US20090214821A1 (en) * | 2008-02-15 | 2009-08-27 | Walsh Anthony T | Multi-axial grid or mesh structures with high aspect ratio ribs |
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US3754960A (en) * | 1971-07-01 | 1973-08-28 | M Hart | Highly plasticized quivery plastic material with replenishing friction surface and method of producing the same |
DE3022019A1 (de) * | 1980-06-12 | 1981-12-17 | Berleburger Schaumstoffwerk Gmbh, 5920 Bad Berleburg | Dichtungsbahn |
US4374798A (en) * | 1978-10-16 | 1983-02-22 | P.L.G. Research | Production of plastic mesh structure |
EP0259165A2 (de) * | 1986-09-05 | 1988-03-09 | Leucadia Inc | Unterbodendrainagematte |
DE3921397A1 (de) * | 1989-06-29 | 1991-01-10 | Boerner Georg Chem Werk | Isolierschutzmaterial, insbesondere fuer den bautenschutz, und verfahren zu dessen herstellung |
Family Cites Families (3)
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NL6609279A (de) * | 1966-07-01 | 1968-01-02 | ||
DE2446345A1 (de) * | 1974-09-27 | 1976-04-15 | Friedrich Ripken Faserverarbei | Verfahren zum herstellen einer wasserbau-filtermatte und nach dem verfahren hergestellte filtermatte |
US5056960A (en) * | 1989-12-28 | 1991-10-15 | Phillips Petroleum Company | Layered geosystem and method |
-
1992
- 1992-02-27 GB GB9204235A patent/GB2255292B/en not_active Expired - Fee Related
- 1992-04-30 HU HU9201464A patent/HUT64121A/hu active IP Right Revival
- 1992-04-30 EP EP19920303911 patent/EP0512752A1/de not_active Withdrawn
- 1992-04-30 MY MYPI92000753A patent/MY108705A/en unknown
- 1992-05-01 CA CA002067835A patent/CA2067835A1/en not_active Abandoned
- 1992-05-06 JP JP4113814A patent/JPH0671244A/ja active Pending
Patent Citations (6)
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FR2103718A5 (de) * | 1970-10-30 | 1972-04-14 | Luthy Erich | |
US3754960A (en) * | 1971-07-01 | 1973-08-28 | M Hart | Highly plasticized quivery plastic material with replenishing friction surface and method of producing the same |
US4374798A (en) * | 1978-10-16 | 1983-02-22 | P.L.G. Research | Production of plastic mesh structure |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1995011350A1 (en) * | 1993-10-19 | 1995-04-27 | Saiform S.P.A. | Geocomposite for reinforcement and containment works having high-elastic modulus and a locally differentiated deformability |
AT401784B (de) * | 1994-06-17 | 1996-11-25 | Differenz Friedrich Dipl Ing D | Dichtungssystem |
EP0778799A1 (de) * | 1994-09-01 | 1997-06-18 | Geosynthetics, Inc. | Stabilisierte flüssigkeitssperrschicht und verfahren zur herstellung |
EP0778799A4 (de) * | 1994-09-01 | 2000-05-03 | Geosynthetics Inc | Stabilisierte flüssigkeitssperrschicht und verfahren zur herstellung |
EP0901408A1 (de) * | 1996-04-10 | 1999-03-17 | Gse Lining Technology Inc. | System und verfahren zur bildung einer strukturierten oberfläche auf eine geomembran |
EP0901408A4 (de) * | 1996-04-10 | 2001-10-04 | Gse Lining Technology Inc | System und verfahren zur bildung einer strukturierten oberfläche auf eine geomembran |
EP0999037A3 (de) * | 1998-11-06 | 2000-08-23 | Bridgestone Corporation | Harznetz und dessen Herstellungsverfahren, sowie gezogenes Produkt aus einem Polyethylen enthaltenden Harz |
EP0999037A2 (de) * | 1998-11-06 | 2000-05-10 | Bridgestone Corporation | Harznetz und dessen Herstellungsverfahren, sowie gezogenes Produkt aus einem Polyethylen enthaltenden Harz |
US6343895B1 (en) | 1998-11-06 | 2002-02-05 | Bridgestone Corporation | Resin net and its production method |
EP1033228A2 (de) * | 1999-02-26 | 2000-09-06 | A.+E. Ungricht GmbH & Co. KG | Kunststoffbahn zur Verwendung im Tiefbau |
EP1033228A3 (de) * | 1999-02-26 | 2008-05-28 | A.+E. Ungricht GmbH & Co. KG | Kunststoffbahn zur Verwendung im Tiefbau |
KR100341505B1 (ko) * | 2000-06-27 | 2002-06-21 | 심진섭 | 마찰성 지오멤브레인 시이트, 그 제조방법 및 장치 |
WO2008146987A1 (en) * | 2007-05-31 | 2008-12-04 | Samyang Corporation | Geonet of multiple layer structure used in engineering works, apparatus for manufacturing the same, and method for manufacturing the same |
EP2576394A4 (de) * | 2009-11-20 | 2018-01-03 | Red Leaf Resources, Inc. | Absenkungskontrollsystem |
Also Published As
Publication number | Publication date |
---|---|
MY108705A (en) | 1996-11-30 |
GB9204235D0 (en) | 1992-04-08 |
GB2255292A (en) | 1992-11-04 |
HUT64121A (en) | 1993-11-29 |
HU9201464D0 (en) | 1992-09-28 |
CA2067835A1 (en) | 1992-11-03 |
JPH0671244A (ja) | 1994-03-15 |
GB2255292B (en) | 1995-08-02 |
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